As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A HEAVY MAINTENANCE CHECK, THE FLOORBEAM UPPER CHORD AT STA 380 RBL 14 TO 41 WAS FOUND TO HAVE CORROSION DUE TO AN EXISTING REPAIR AT THIS LOCATION EXTENDING FROM LBL 7 TO THE RIGHT HAND FRAME. AN ENGINEERING ORDER WAS ISSUED TO ACCOMPLISH A REPAIR FOR THIS FLOOR BEAM. UTILIZING REF 53108 FIG 3.